<template>
  <div class="app-container">

    <!-- 顶部 Header 区域 -->
    <mt-header fixed title="黑马程序员·Vue项目">
		<span slot="left" @click="goBack" v-show="flag">
			<mt-button icon="back">返回</mt-button>
		</span>>
	</mt-header>


    <!-- 中间的 路由 router-view 区域 -->
		<transition>
			<router-view></router-view>
		</transition>


    <!-- 底部 Tabbar 区域 -->
    <nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item1" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item1" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item1" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart">
					<span class="mui-badge" id="badge">{{this.$store.getters.getAllCount}}</span>
				</span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item1" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>

  </div>
</template>

<script>
	export default {
		data(){
			return{
				flag:false
			}
		},
		created(){
		//刚进入时，如果是首页，就隐藏返回按钮
			this.flag=this.$route.path==='/home'?false:true
		},
		methods:{
			goBack(){
				this.$router.go(-1)
			}
		},
		watch:{
			"$route.path":function (newVal) {
				if(newVal==='/home'){
					this.flag=false
				}else{
					this.flag=true
				}
			}
		}
	}
</script>


<style lang="scss" scoped>
	*{
		touch-action: pan-y;
	}
.app-container {
  	padding-top: 40px;
	padding-bottom: 50px;
  	overflow-x: hidden;

}
.mint-header{
	z-index: 99;//解决页面上划时与头部重叠现实的问题
}



.v-enter {
  opacity: 0;
  transform: translateX(100%);
}

.v-leave-to {
  opacity: 0;
  transform: translateX(-100%);
  position: absolute;
}

.v-enter-active,
.v-leave-active {
  transition: all 0.5s ease;
}

	/*改类名,解决tabbar无法切换的问题*/


	 .mui-bar-tab .mui-tab-item1.mui-active {
		 color: #007aff;
	 }

	 .mui-bar-tab .mui-tab-item1 {
		 display: table-cell;
		 overflow: hidden;
		 width: 1%;
		 height: 50px;
		 text-align: center;
		 vertical-align: middle;
		 white-space: nowrap;
		 text-overflow: ellipsis;
		 color: #929292;
	 }
	.mui-bar-tab .mui-tab-item1 .mui-icon {
		top: 3px;
		width: 24px;
		height: 24px;
		padding-top: 0;
		padding-bottom: 0;
	}
	.mui-bar-tab .mui-tab-item1 .mui-icon~.mui-tab-label {
		font-size: 11px;
		display: block;
		overflow: hidden;
		text-overflow: ellipsis;
	}


</style>
